While nothing has been confirmed, one insider told Us Weekly: "I'm not sure the deal is completely done yet, but yes, she is definitely doing it. A few more slight things to sign off on, but it is happening."

Another source told the celebrity gossip news hub that Minaj, 29, is "100% confirmed to judge American Idol." Reps for both Minaj and Fox had no comment on the speculation.

If the reports are true, Minaj is set to join a star-studded cast. Original American Idol judge Randy Jackson, 56, is reportedly returning as a mentor and five-time Grammy Award winner Mariah Carey, 42, confirmed her spot as a judge on July 23.

"As a singer, songwriter and producer, it's going to be fun and rewarding to help find new talent and give back with 'American Idol,' " she said in a statement. "I can't wait to channel my creative energy as a part of this show which is a massive global phenomenon."